#include<iostream>
#include<eigen3/Eigen/Dense>
using namespace Eigen;
int main()
{
MatrixXf mat1(2,3);
MatrixXf mat2(3,2);
mat1 << 1,1,1,1,1,1;
mat2 << 1,4,2,5,3,6;
std::cout<<"here is mat1*mat2:\n"<<mat1*mat2<<std::endl;
}
